Hotend started leaking from the heatbreak
Hello,
I have been having nothing but good times with my printer for a long time now.
I have been printing my last two prints for the first time at high 275'C/280'C temperatures for some extra tight colorfabb HT material goodness.
After the prints I have noticed a big ball of plastic seeping through the silicone sock. I was like what..?
I took the hotend apart just to find this:
Seems like plastic started seeping through the stem above of the heating block.
What should I do? 😐
Re: Hotend started leaking from the heatbreak
Your heatblock, cooler and nozzle is not tighten.
Thomas
Re: Hotend started leaking from the heatbreak
How could I tighten it? I never had issues with it in hundreds of hours of printing..
Re: Hotend started leaking from the heatbreak
How could I tighten it? I never had issues with it in hundreds of hours of printing..
All you need to know here: https://wiki.e3d-online.com/wiki/E3D-v6_Assembly
The hot end is usually tightened at around 250 degrees; you may need to tighten at a higher temp.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Hotend started leaking from the heatbreak
So basically I need to take off the top part of the heatbreak(the radiator with the tube) which is hand tightened, heat up to 280 or something and use a spanner with pliers to tighten the heatbreak?
Re: Hotend started leaking from the heatbreak
1. Unscrew the nozzle (hot) unscrew heat break 1 turn.
2. Screw in nozzle so it's tight, then unscrew between quarter and half a turn. Absolutely no more than a half a turn.
3. Tighten the heat break against the nozzle.
4. Heat to 280 degrees
5. Tighten nozzle (but not over-tight).
My guess is that there was an error during step 2 when assembled - not unscrewed enough.
You will probably need to remove both nozzle and heat break to make sure the mating surfaces are clean.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Hotend started leaking from the heatbreak
I don't think I can do that without having the fan on, can I? Could I just try heating to 280 and use a quick turning motion in hopes to tighten it with a spanner?
Re: Hotend started leaking from the heatbreak
You need to disassemble the extruder.
Remove the part fan; remove the extruder fan (front 2 screws), remove the front extruder body (2 screws).
Pull out the extruder - careful not to damage the cables). Heat and holding the heat block with pliers, loosen the nozzle with a spanner. Turn off the heat, allow to cool, remove nozzle, unscrew the heat sink, which will retain the heat break.
Clean the top of the nozzle and the bottom of the heat break. Assemble as mentioned earlier.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Hotend started leaking from the heatbreak
look here, at about 5:20 thomas shows how to remove a nozzle and reassemble the hotend. procedure should be quite similar.
it's a good idea to apply some anti-seize compound to the threads of the nozzle and the heatbrak. usually you can buy this stuff at a shop for car parts as "copper paste".
but as Peter mentioned: it is required to disassemble the whole extruder first... and it's handy to have a bench vice in close distance.
dem inscheniör is' nix zu schwör...
Re: Hotend started leaking from the heatbreak
I know this is frowned upon by some. I had issues with ngen and XT leaking, particularly at higher extrusion temps. I used high temp thread sealant and the guide from Lulzbot.
https://www.lulzbot.com/content/budaschnozzle-20-pla-fix-high-temp-thread-lock-nozzle-threads
The only place I could find the sealant was McMaster-Carr, but ever since I did it I have never had an issue with leakage. Dont use regular thread sealant as it cannot handle extruder temperatures.